os.File clean up + socket.v (dial())

compiler/cgen.v

@@ -68,7 +68,7 @@ fn (g mut CGen) gen(s string) {
 
 fn (g mut CGen) save() {
 	s := g.lines.join('\n')
-	g.out.appendln(s)
+	g.out.writeln(s)
 	g.out.close()
 }
 

compiler/main.v

@@ -823,7 +823,6 @@ fn new_v(args []string) *V {
 			files << f
 		}
 	}
-	obfuscate := args.contains('-obf')
 	return &V {
 		os: _os
 		out_name: out_name
@@ -839,7 +838,7 @@ fn new_v(args []string) *V {
 		is_play: args.contains('play')
 		is_prod: args.contains('-prod')
 		is_verbose: args.contains('-verbose')
-		obfuscate: obfuscate
+		obfuscate: args.contains('-obf') 
 		is_prof: args.contains('-prof')
 		is_live: args.contains('-live')
 		sanitize: args.contains('-sanitize')

compiler/parser.v

@@ -236,7 +236,7 @@ fn (p mut Parser) parse() {
 			}
 			if true && !p.first_run() && p.fileis('test') {
 				out := os.create('/var/tmp/fmt.v')
-				out.appendln(p.scanner.fmt_out.str())
+				out.writeln(p.scanner.fmt_out.str())
 				out.close()
 			}
 			return

vlib/net/socket.v

@@ -0,0 +1,78 @@
+module net
+
+#include <netdb.h>
+#include <sys/types.h>
+#include <netinet/in.h>
+#include <sys/socket.h>
+#include <errno.h>
+
+struct Conn {
+pub: 
+	sockfd int
+}
+
+struct Listener {
+	listener   int
+	their_addr voidptr
+}
+
+import const ( 
+	AF_UNSPEC 
+	SOCK_STREAM 
+	AI_PASSIVE 
+) 
+
+struct C.addrinfo {
+mut: 
+	ai_family int 
+	ai_socktype int 
+	ai_flags int 
+	ai_protocol int 
+	ai_addrlen int 
+	ai_next voidptr 
+	ai_addr voidptr 
+} 
+
+fn dial(addr string, port int) Conn {
+	println('net.dial("$addr":$port)')
+	mut hints := C.addrinfo{} 
+	servinfo := &C.addrinfo{!} 
+	mut rp := &C.addrinfo{!} 
+	mut sockfd := -1
+	// allow IPv4 or IPv6
+	hints.ai_family = AF_UNSPEC 
+	// avoid name lookup for port
+	// hints.ai_flags = AI_NUMERICSERV 
+	hints.ai_socktype = SOCK_STREAM 
+	hints.ai_flags = AI_PASSIVE 
+	strport := '$port'
+	connbad := Conn{}
+	c_addr := addr.cstr()
+	rv := C.getaddrinfo(c_addr, strport.cstr(), &hints, &servinfo)
+	if rv != 0 { 
+		println('Getaddrinfo failed ')
+		return connbad
+	}
+	// Loop through all the results and connect to the first we can
+	for rp = servinfo; !isnil(rp); rp = rp.ai_next  { 
+		sockfd = C.socket(rp.ai_family, rp.ai_socktype, rp.ai_protocol) 
+		if sockfd == -1 {
+			continue 
+		} 
+		if C.connect(sockfd, rp.ai_addr, rp.ai_addrlen) {
+			C.close(sockfd) 
+			continue 
+		} 
+		break 
+	}
+	if sockfd == -1 {
+		println('socket: Cannot connect to host')
+		return connbad
+	}
+	C.freeaddrinfo(servinfo) 
+	conn := Conn {
+		sockfd: sockfd,
+	}
+	return conn
+}
+

vlib/net/socket_test.v

@@ -0,0 +1,8 @@
+import net 
+
+fn test_dial() {
+
+conn := net.dial('irc.freenode.org', 6667) 
+println(conn.sockfd) 
+ 
+} 

vlib/os/os.v

@@ -188,7 +188,7 @@ fn create_file2(file, mode string) File {
 	return res
 }
 
-fn (f File) append(s string) {
+pub fn (f File) write(s string) {
 	ss := s.clone()
 	C.fputs(ss.cstr(), f.cfile)
 	// ss.free()
@@ -208,7 +208,7 @@ fn (f File) write_bytes_at(data voidptr, size, pos int) {
 	C.fseek(f.cfile, 0, SEEK_END)
 }
 
-pub fn (f File) appendln(s string) {
+pub fn (f File) writeln(s string) {
 	// C.fwrite(s.str, 1, s.len, f.cfile)
 	// ss := s.clone()
 	// TODO perf
@@ -446,7 +446,7 @@ pub fn home_dir() string {
 // write_file writes text data to a file in `path`. 
 pub fn write_file(path, text string) {
 	f := os.create(path)
-	f.appendln(text)
+	f.writeln(text)
 	f.close()
 }
 
@@ -505,7 +505,7 @@ pub fn is_dir(path string) bool {
 	} 
 }
 
-fn chdir(path string) {
+pub fn chdir(path string) {
 	$if windows {
 		C._chdir(path.cstr())
 	}
@@ -555,7 +555,7 @@ pub fn ls(path string) []string {
 fn log(s string) {
 }
 
-fn print_backtrace() {
+pub fn print_backtrace() {
 /* 
 	# void *buffer[100];
 	nptrs := 0